Power circuit of ac power supply

Active Publication Date: 2015-10-01
CHYNG HONG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]The AC power supply power circuit is connected to the adjustable DC voltage regulation circuit via the DC/DC circuit, and further connected to the amplifier so as to simplify the circuit and lower the cost, thereby outputting diffe

Problems solved by technology

Since the AC power supply power circuit outputs different AC voltages via a plurality of parallel-series connections of the amplifiers, a complicated circuit and an increasing cost are caused.
In this manner, the voltage output needs to be interrupted, which renders the transmitted power level unable to be switched promptly.
However, since the switching operation of the parallel circuit and the series circuit of the switch circuit relies on the contactors but not on a stepless adjusting output mode, the switch cir

Method used

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  • Power circuit of ac power supply
  • Power circuit of ac power supply
  • Power circuit of ac power supply

Examples

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Example

[0024]Referring to FIG. 4 which shows a block diagram of a preferred embodiment of the present invention, a power circuit comprises a power input unit 10 externally connected to an AC power 200, thereby supplying an outside AC voltage.

[0025]An AC / DC converter 20 connected to the power input unit 10 for receiving the AC voltage supplied from the power input unit 10 and converting the AC voltage input from the power input unit 10 into a DC voltage via a filter and rectification.

[0026]A DC / DC circuit 30 connected to the AC / DC converter 20. The DC / DC circuit 30 includes a primary side circuit 40. The primary side circuit 40 is connected to the AC / DC converter 20 and is able to execute a conversion of a stable power of the DC voltage converted by the AC / DC converter 20. The primary side circuit 40 is connected to a transformer 50. The transformer 50 includes a set of primary winding 51 and a set of secondary winding 52. The primary winding 51 is connected to the primary side circuit 40 a...

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PUM

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Abstract

A power circuit of an AC power supply comprises a power input unit connected to a AC/DC converter. The AC/DC converter is connected to a DC/DC circuit, and the DC/DC circuit is further connected to an adjustable DC voltage regulation circuit. The adjustable DC voltage regulation circuit is connected to an amplifier to amplify and convert the DC voltages into the AC voltages, thereby outputting different AC voltages and electric currents under the condition of not switching off the output when adjusting the voltage via cross position, so that a power level is switched promptly and a very low power distortion.

Description

[0001]The current application is a continuation-in-part of Ser. No. 13 / 744,713 filed on Jan. 18, 2013.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a power circuit of an AC power supply.[0004]2. Description of the Related Art[0005]Referring to FIG. 1, a block diagram of a conventional AC power supply circuit is shown. An output procedure generated from a structure of the power circuit is described as follows. A power input unit 1 receives an outer AC voltage. The power input unit 1 is connected to an AC / DC converter 2 and converts the AC voltage provided from the power input unit 1 into a DC voltage via a filter and rectification.[0006]The DC voltage output from the AC / DC converter 2 is converted by a stable power of a primary side circuit 3 and sent to a transformer 4 for being transformed. The transformer 4 includes a set of primary winding 5 and two sets of secondary windings 6. The primary winding 5 is electrically connected to ...

Claims

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Application Information

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IPC IPC(8): H02M5/42H02M1/00
CPCH02M5/42H02M5/458H03F1/3211H02M1/007
Inventor LIN, MU-CHUN
Owner CHYNG HONG ELECTRONICS
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